Featured Research

from universities, journals, and other organizations

Molecule That Facilitates Cancer Spread In Both Cells And Their Surroundings Found

Date:
January 21, 2008
Source:
Dartmouth Medical School
Summary:
The discovery that a molecule drives local tumor growth, as well as its ability to flourish and spread, opens a new window for understanding and treating cancer by taking aim at both cancer cells and their surrounding environment. Scientists found that a member of a common molecular family plays a role in the progress of a particularly resilient and aggressive pancreatic cancer, and that its influence is not restricted to that cancer.

The discovery that a molecule drives local tumor growth, as well as its ability to flourish and spread, opens a new window for understanding and treating cancer by taking aim at both cancer cells and their surrounding environment.

A Dartmouth Medical School team led by Dr. Murray Korc found that a member of a common molecular family plays a role in the progress of a particularly resilient and aggressive pancreatic cancer, and that its influence is not restricted to that cancer.

The work builds on studies by Korc, professor and chair of medicine at DMS, and colleagues at University of California, Irvine on glypican molecules, which interact with many growth factors implicated in cancer. A receptor called glypican-1 (GPC1) is abnormally abundant in pancreatic ductal adenocarcinoma, the most common and deadliest form of pancreatic cancer, often diagnosed after it has spread or metastasized.

Human pancreatic cells deprived of their own GPC1 had reduced growth in culture, as well as when they were transplanted into immunocompromised mice (known as athymic for the lack of a thymus gland) that don't reject human cancer cells, the researchers demonstrated.

"Tumors grow more slowly and are smaller. Interestingly, they also have less angiogenesis (blood vessel growth) and less metastasis," said Korc, also a professor pharmacology and toxicology and member of the Norris Cotton Cancer Center.

Since GPC1 is common in many tissues, the researchers wanted to determine its role in the host environment, or how it functions in a patient. Knocking out the gene for GPC1 in mice, they created an athymic mouse population that lacked GPC1; then they introduced cancer cells.

Host mice devoid of GPC1 had smaller pancreatic tumors that were less angiogenic and less metastatic when exposed to tumor cell lines with normal levels of GPC1. The metastatic potential of mouse melanoma (skin cancer) cells injected into mice with no GPC1 was also greatly decreased, the researchers found.

"We've shown that GPC1 in the cancer cells and in the host—that is, the patient—is important not only for tumor growth, but for tumor angiogenesis and metastasis, Korc said. "This raises the possibility for therapeutic manipulations that will target GPC1 in both cancer cells and in patients to slow tumor growth and to prevent metastasis."

Zeroing in on mechanisms that allow metastasis to occur more efficiently -namely, presence of GPC1—in either the cancer cells or the host, offers new options against cancer. The approach seems promising because, added Korc, "Host-cancer interactions are becoming significant as clinicians and cancer researchers realize that the environment around cancer cells is just as important as the cancer cells themselves."

This research was reported in the January Journal of Clinical Investigation. Co-authors on the research are Takuma Aikawa, Chery A. Whipple, Jason Gunn, Alison Young, of DMS, and Martha E. Lopez and Arthur D. Lander of UC Irvine.


Story Source:

The above story is based on materials provided by Dartmouth Medical School. Note: Materials may be edited for content and length.


Cite This Page:

Dartmouth Medical School. "Molecule That Facilitates Cancer Spread In Both Cells And Their Surroundings Found." ScienceDaily. ScienceDaily, 21 January 2008. <www.sciencedaily.com/releases/2008/01/080117180113.htm>.
Dartmouth Medical School. (2008, January 21). Molecule That Facilitates Cancer Spread In Both Cells And Their Surroundings Found. ScienceDaily. Retrieved October 2, 2014 from www.sciencedaily.com/releases/2008/01/080117180113.htm
Dartmouth Medical School. "Molecule That Facilitates Cancer Spread In Both Cells And Their Surroundings Found." ScienceDaily. www.sciencedaily.com/releases/2008/01/080117180113.htm (accessed October 2, 2014).

Share This



More Health & Medicine News

Thursday, October 2, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Pregnancy Spacing Could Have Big Impact On Autism Risks

Pregnancy Spacing Could Have Big Impact On Autism Risks

Newsy (Oct. 1, 2014) A new study says children born less than one year and more than five years after a sibling can have an increased risk for autism. Video provided by Newsy
Powered by NewsLook.com
Ebola Patient Told Hospital He Was from Liberia

Ebola Patient Told Hospital He Was from Liberia

AP (Oct. 1, 2014) The first Ebola patient diagnosed in the U.S. initially went to a Dallas emergency room last week but was sent home, despite telling a nurse that he had been in disease-ravaged West Africa, the hospital acknowledged Wednesday. (Oct. 1) Video provided by AP
Powered by NewsLook.com
Robotic Hair Restoration

Robotic Hair Restoration

Ivanhoe (Oct. 1, 2014) A new robotic procedure is changing the way we transplant hair. The ARTAS robot leaves no linear scarring and provides more natural results. Video provided by Ivanhoe
Powered by NewsLook.com
Insertable Cardiac Monitor

Insertable Cardiac Monitor

Ivanhoe (Oct. 1, 2014) A heart monitor the size of a paperclip that can save your life. The “Reveal Linq” allows a doctor to monitor patients with A-Fib on a continuous basis for up to 3 years! Video provided by Ivanhoe
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins